2008/10/24 Lorenzo Isella <[EMAIL PROTECTED]>:
> Dear All,
> I am running Debian testing on my box. I had not used Python for about
> a couple of weeks (during which I updated my system regularly) only to
> find out that today I have a trouble if I try to import pylab. See
> below what happens
>
> In [1]: import pylab as p
> ---------------------------------------------------------------------------
> ImportError                               Traceback (most recent call last)
>
> /home/iselllo/<ipython console> in <module>()
>
> /usr/lib/python2.5/site-packages/pylab.py in <module>()
> ----> 1 from matplotlib.pylab import *
>      2 import matplotlib.pylab
>      3 __doc__ = matplotlib.pylab.__doc__
>
> /usr/lib/python2.5/site-packages/matplotlib/pylab.py in <module>()
>    202 from numpy import ma
>    203
> --> 204 from matplotlib import mpl  # pulls in most modules
>    205
>    206 from matplotlib.dates import date2num, num2date,\
>
> /usr/lib/python2.5/site-packages/matplotlib/mpl.py in <module>()
> ----> 2 from matplotlib import axis
>      3 from matplotlib import axes
>      4 from matplotlib import cbook
>      5 from matplotlib import collections
>      6 from matplotlib import colors
>
> /usr/lib/python2.5/site-packages/matplotlib/axis.py in <module>()
>     11 import matplotlib.patches as mpatches
>     12 import matplotlib.scale as mscale
> ---> 13 import matplotlib.text as mtext
>     14 import matplotlib.ticker as mticker
>     15 import matplotlib.transforms as mtransforms
>
> /usr/lib/python2.5/site-packages/matplotlib/text.py in <module>()
>     17 from lines import Line2D
>     18
> ---> 19 import matplotlib.nxutils as nxutils
>     20
>     21 def _process_text_args(override, fontdict=None, **kwargs):
>
> ImportError: /usr/lib/python2.5/site-packages/matplotlib/nxutils.so:
> undefined symbol: __gxx_personality_v0
>
> I have no idea of what is going on; I do not remember doing anything
> funny with my Python installation.
> Any help is really appreciated now, since without pylab many of my
> codes are unusable.
> Many thank in advance
>
I'm guessing this is because you've recently upgraded to the latest
testing version of mpl... and it's broken. If that's the case you need
to upgrade to the unstable version (0.98.3-3) and all will work again.

HTH,

Angus.

> Lorenzo
>
> --
> Free will does not consist in inverting the river flow, but in being
> the fish that leaps upstream.
>
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-- 
AJC McMorland
Post-doctoral research fellow
Neurobiology, University of Pittsburgh

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